7

我是一名软件开发人员，我正在为电子邮件制作应用程序，并且我有以下代码：

// Header file  

// importing the MessageUI framework  
#import <MessageUI/MessageUI.h>  

// adding the delegate functionality to the class (<MFMailComposeViewControllerDelegate>)  
@interface TutorialProjectViewController : UIViewController <MFMailComposeViewControllerDelegate> {  

}  

- (IBAction)pressTheMailButtonDudeFunction:(id)sender

// Implementation file  

- (IBAction)pressTheMailButtonDudeFunction:(id)sender {  

    // allocatind new message composer window  
    MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];  

    // setting a delegate method to "self"  
    mc.mailComposeDelegate = self;  

    // pre-populating the message subject  
    [mc setSubject:@"Send me a message"];  

    // adding content of the message as a plain text  
    [mc setMessageBody:@"Send me a message is you like this tutorial :)" isHTML:NO];  

    // adding content of the message as an HTML  
    [mc setMessageBody:@"<p>Send me a message is you like this tutorial :)<p>" isHTML:YES];  

    // adding recipients  
    [mc setToRecipients:[NSArray arrayWithObjects:@"Fuerte <info@fuerte.cz>", @"info@xprogress.com", nil]];  

    // adding recipients for a send copy to (arrayWithObject or arrayWithObjects)  
    [mc setCcRecipients:[NSArray arrayWithObject:@"test@example.com"]];  

    // adding hidden recipients  
    [mc setBccRecipients:[NSArray arrayWithObject:@"test@example.com"]];  

    // adding image attachment  
    // getting path for the image we have in the tutorial project  
    NSString *path = [[NSBundle mainBundle] pathForResource:@"Extra_Xcode_100x100" ofType:@"png"];  

    // loading content of the image into NSData  
    NSData *imageData = [NSData dataWithContentsOfFile:path];  

    // adding the attachment to he message  
    [mc addAttachmentData:imageData mimeType:@"image/png" fileName:@"Collection"];  

    // setting different than the default transition for the modal view controller  
    [mc setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];  

    /* 
     Modal view controllers transitions: 

     UIModalTransitionStyleCoverVertical => pops up from the bottom, default transition 
     UIModalTransitionStyleCrossDissolve => fade on the screen 
     UIModalTransitionStyleFlipHorizontal => page flip 
     */  

    // displaying our modal view controller on the screen (of course animated has to be set on YES if you want to see any transition)  
    [self presentModalViewController:mc animated:YES];  

    // releasing the controller  
    [mc release];  
}  

// delegate function callback  
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {  
    // switchng the result  
    switch (result) {  
        case MFMailComposeResultCancelled:  
            NSLog(@"Mail send canceled.");  
            /* 
             Execute your code for canceled event here ... 
             */  
            break;  
        case MFMailComposeResultSaved:  
            NSLog(@"Mail saved.");  
            /* 
             Execute your code for email saved event here ... 
             */  
            break;  
        case MFMailComposeResultSent:  
            NSLog(@"Mail sent.");  
            /* 
             Execute your code for email sent event here ... 
             */  
            break;  
        case MFMailComposeResultFailed:  
            NSLog(@"Mail send error: %@.", [error localizedDescription]);  
            /* 
             Execute your code for email send failed event here ... 
             */  
            break;  
        default:  
            break;  
    }  
    // hide the modal view controller  
    [self dismissModalViewControllerAnimated:YES];  
}

而且我没有得到正确的答案...这是正确的代码吗？

4

3 回答 3

5
  1. 确保您将 MessageUI 框架包含到您的 iOS 项目中。在 Xcode 4 中，您可以通过在左栏中选择您的项目来包含该框架。然后选择选项卡“构建阶段”。在这里，您可以单击“Link Binary With Libraries”左侧的箭头，您会看到已包含在您的应用程序中的框架列表。如果 MessageUI.framework 丢失 - 只需将其添加到那里。
  2. 您发布的代码看起来像是一个完整的教程代码被剪断......所以只使用您需要的代码......并逐步添加更多功能。这样，您将看到添加错误代码行的位置。您的应用程序包中可能没有图像“Extra_Xcode_100x100.png”。

所以，这是一个“最小”的 MFMailComposeViewController：


- (IBAction)showMinimalModalMailView:(id)sender {
    // get a new new MailComposeViewController object 
    MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];  

    // his class should be the delegate of the mc  
    mc.mailComposeDelegate = self;  

    // set a mail subject ... but you do not need to do this :)
    [mc setSubject:@"This is an optional mail subject!"];  

    // set some basic plain text as the message body ... but you do not need to do this :)
    [mc setMessageBody:@"This is an optional message body plain text!" isHTML:NO];  

    // set some recipients ... but you do not need to do this :) 
    [mc setToRecipients:[NSArray arrayWithObjects:@"first.address@test.com", @"second.address@test.com", nil]];  

    // displaying our modal view controller on the screen with standard transition  
    [self presentModalViewController:mc animated:YES];  

    // be a good memory manager and release mc, as you are responsible for it because your alloc/init
    [mc release];  

}
于 2011-05-02T20:47:40.143 回答
2

我遇到了同样的问题，每次在发送消息时运行应用程序都会崩溃；我发现如果我删除

[mc setToRecipients:[NSArray arrayWithObjects:@"first.address@test.com", @"second.address@test.com", nil]];

它工作正常，只是要求我提供电子邮件地址。

于 2012-01-04T13:54:46.200 回答
0

要从应用程序发送电子邮件，您的设备应配置为电子邮件服务。

// importing the MessageUI framework  
#import <MessageUI/MessageUI.h>  

// adding the delegate functionality to the class (<MFMailComposeViewControllerDelegate>)  
@interface ViewController : UIViewController <MFMailComposeViewControllerDelegate> {  

}

- (IBAction)sendEMailClick:(id)sender {

    //check mail service is configure to your device or not.
    if ([MFMailComposeViewController canSendMail]) {

        // get a new new MailComposeViewController object
        MFMailComposeViewController * composeVC = [MFMailComposeViewController new];

        // his class should be the delegate of the composeVC
        [composeVC setDelegate:self];

        // set a mail subject ... but you do not need to do this :)
        [composeVC setSubject:@"This is an optional mail subject!"];

        // set some basic plain text as the message body ... but you do not need to do this :)
        [composeVC setMessageBody:@"This is an optional message body plain text!" isHTML:NO];

        // set some recipients ... but you do not need to do this :)
        [composeVC setToRecipients:[NSArray arrayWithObjects:@"first.address@test.com", @"second.address@test.com", nil]];

        // Present the view controller modally.

        [self presentViewController:composeVC animated:true completion:nil];
    } else {

        NSLog(@"Mail services are not available or configure to your device");
    }
}

发送电子邮件或取消后，单击调用的MFMailComposeViewController委托方法MFMailComposeViewControllerDelegate，这样您就可以检查电子邮件发送状态。

#pragma mark - MFMailComposeViewControllerDelegate Methode.
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(nullable NSError *)error {

    switch (result) {
        case MFMailComposeResultCancelled:
            NSLog(@"Mail cancelled");

            break;

        case MFMailComposeResultSaved:
            NSLog(@"Mail saved");

            break;

        case MFMailComposeResultSent:
            NSLog(@"Mail sent");

            break;

        case MFMailComposeResultFailed:
            NSLog(@"Mail sent failure: %@",error.description);

            break;
    }

    // Dismiss the mail compose view controller.
    [controller dismissViewControllerAnimated:true completion:nil];

}
于 2017-06-30T06:53:57.280 回答